In this tutorial, we will see how to send text messages with ESP32/ESP8266 and Twilio using MicroPython. Twilio is a communications web service that allows users to make and receive phone calls and SMS along with other communication functions. Although Twilio is not free to use but you can get started with a free trial … Read more
In this tutorial, we will see how to send text messages with Raspberry Pi Pico W and Twilio using MicroPython. Twilio is a communications web service that allows users to make and receive phone calls and SMS along with other communication functions. Although Twilio is not free to use but you can get started with … Read more
In this tutorial, we will show you how to send Whatsapp messages to your account with ESP32 and ESP8266 using Whatabot or callmebot free APIs and MicroPython. You can use any one of them. But we will use callmebot API for demonstration. These free WhatsApp APIs can be helpful in sending message notifications, sensor readings, … Read more
In this tutorial, we will show you how to send Whatsapp messages to your account with Raspberry Pi Pico W using Whatabot or callmebot free APIs and MicroPython. You can use any one of them. But we will use callmebot API for demonstration. These free WhatsApp APIs can be helpful in sending message notifications, sensor … Read more
In this tutorial, we will learn to how to publish sensor readings to Node-Red dashboard through MQTT and Raspberry Pi Pico W. The Pico W board will as a an MQTT client and as a Publisher and Node-Red as a subscriber. We will publish BME280 sensor readings to MQTT broker with and Node-Red Dashboard will … Read more
In this tutorial, we will learn to use MQTT client on Raspberry Pi Pico W to publish and subscribe MQTT messages using MicroPython. We will see two examples. In first example, Raspberry Pi Pico W will publish message on “rpi_pico_w/test_pub” topic after every few seconds. Similarly in the second example, Pico W will subscribe to … Read more
In this tutorial, we will learn how to set up ESP32 as a BLE server and use the GATT service to send battery levels to the Android app. For demonstration, we will use the GATT service to send battery percentage levels to our android smartphone from ESP32. The ESP32 board will therefore act as a … Read more
In this tutorial, we will create a ROS Range publisher Node on Arduino that publishes HC-SR04 ultrasonic sensor readings on ROS “/ultrasound” topic using rosserial and how to read range topic readings in ROS. Before that, we will introduce you to HC-SR04 sensor and interface it with Arduino to build the Arduino ROS range publisher … Read more
In this tutorial, we will learn to use TCA9548A I2C multiplexer with Arduino. We will discuss how to use multiple I2C devices with Arduino having the same address by incorporating a hardware solution. By using a TCA9548A I2C Multiplexer, we will be able to increase the I2C addresses range of Arduino and able to connect … Read more
In this tutorial, we will show you how to subscribe to ROS topics using Arduino rosserial. We will see how to set up a ROS node on Arduino that we will receive data on a specific topic from ROS. In a previous tutorial, we introduced you to ROS and how to set it up with … Read more